The law of chance is not used the same way,here, as it is used in insurance or investment, on both sides. If you do something according to the principles of the law, then under natural circumstances you have a 50% chance of it being totally successful. If it fails then you have only done good. According to The League of Nations, the United Nations and all the entities within, and associated with the United Nations, the only conditions for negotiation are; to put it in a picture, the Triangle of Abraham Maslow's Hierarcy of Needs, and self Determination. Self determination is developed through the Abraham Maslow's Hierarchy of Needs.
Rohani: Nuclear deal achieves Iran's goals (AP)